Electronic cigarette



FIG. 1 is a first perspective view of an electronic cigarette, showing our new design;

FIG. 2 is a second perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken line portions of the electronic cigarette in drawings represent portions that form no part of the claimed design. 

CLAIM The ornamental design for an electronic cigarette, as shown and described. 